Site

State

PM AQI* (ug/m3)

Libby Courthouse

MT

18

Seeley Elementary School

MT

12

Fargo NW

ND

12

Bismarck Residential

ND

12

Hannover

ND

11

Cut Bank

MT

11

RYDER

ND

10

Lostwood NWR

ND

10

Grangeville

ID

10

Billlings Lockwood

MT

9